At Drombanny in County Limerick, a circular enclosure roughly forty metres across sits within reclaimed grassland, its outline defined not by upstanding walls or earthen banks but by a fosse, a ditch, that has been absorbed into the surrounding land over centuries. At ground level, the feature can be easy to miss entirely; it is the overhead view that makes the geometry legible.

The site was recorded from aerial imagery, specifically an Ordnance Survey Ireland orthophoto and a Digital Globe orthoimage captured between 2011 and 2013, and compiled by Caimin O'Brien, with the record uploaded in June 2020. The enclosure belongs to a broader tradition of circular earthwork enclosures found across Ireland, a category that includes ringforts and other enclosed settlements dating predominantly from the early medieval period, though not all such features have been conclusively dated. A fosse, in this context, is simply a ditch, typically cut to define the perimeter of an enclosure and sometimes accompanied by an internal or external bank, though here the survival appears to be the cut itself rather than any associated upstanding element. The reclamation of the surrounding grassland has flattened much of the local topography, which is precisely why remote sensing imagery proved more useful than any surface survey might have been.

The site lies in reclaimed agricultural land, which means access is likely to depend on private landholding and there is no formal public provision noted. Anyone with an interest in cropmark archaeology or aerial survey would find the publicly available OSi orthophotography worth examining before any visit, as the enclosure's fosse is far more apparent there than it is likely to be underfoot. The best chance of reading the feature on the ground, if at all, may come during dry summer conditions when differential moisture retention in the buried ditch can produce faint variations in grass colour or growth.